The kingdom of God could be realized simply by daring to live differently from the normal conventions. The kingdom of God in the teachings of Jesus was not an apocalyptic or heavenly projection of otherworldly desire. It was driven by a desire to think that there must be a better way to live together than the present state of affairs. And it called for a change of behavior in the present on the part of individuals invested in the vision.
There are lone figures armed only with ideas, sometimes with just one idea, who blast away whole epochs in which we are enwrapped like mummies. Some are powerful enough to resurrect the dead. Some steal on us unawares and put a spell over us which it takes centuries to throw off. Some put a curse on us, for our stupidity and inertia, and then it seems as if God himself were unable to lift it.
I know my fate. One day there will be associated with my name the recollection of something frightful -- of a crisis like no other before on earth, of the profoundest collision of conscience, of a decision evoked against everything that until then had been believed in, demanded, sanctified. I am not a man I am dynamite.
For light I go directly to the Source of light, not to any of the reflections.
Vision looks inwards and becomes duty. Vision looks outwards and becomes aspiration. Vision looks upwards and becomes faith.
Your vision of the future is largely what determines your level of optimism today.